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Publication numberUS7331121 B2
Publication typeGrant
Application numberUS 11/037,349
Publication dateFeb 19, 2008
Filing dateJan 19, 2005
Priority dateJan 19, 2005
Fee statusPaid
Also published asUS20060156575
Publication number037349, 11037349, US 7331121 B2, US 7331121B2, US-B2-7331121, US7331121 B2, US7331121B2
InventorsChie-Fang Lo
Original AssigneeChie-Fang Lo
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Inflatable shoe sole
US 7331121 B2
Abstract
A shoe sole includes a chamber which is inflated by a pumping device via a connection tube. The connection tube includes a first valve to prevent air from flowing back into the pumping device and an inlet tube extends from the pumping device to introduce air from outside into the pumping device. A plurality of outlets are defined in a distal end of the connection tube and located corresponding to toes of the wearer. The connection tube has a neck portion which defines a narrowed path in the connection tube so that air is stopped at the neck portion to inflate the chamber, when the pressure of the air reaches to a pre-decided value, air passes through the neck portions and blows out from the outlets to cool the toes of the wearers.
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Claims(5)
1. A shoe sole (1) comprising:
a chamber (11), a pumping device (12) and a connection tube (13) which is in communication with the chamber (11) and the pumping device (12), the connection tube (13) located longitudinally in the shoe sole and an end tube (130) connected transversely to a distal end of the connection tube (13), a first valve (131) received in the connection tube (13) so as to prevent air from flowing back into the pumping device (12), an inlet tube (121) extending from the pumping device (12) so as to introduce air from outside into the pumping device (12), an outlet tube (112) extending from the pumping device (12) and located in the chamber (11) so as to introduce air from the pumping device (12) into the chamber (11), a plurality of outlets (133) defined in the end tube (130), the outlets (133) located at a front section of the sole and adapted to be located beneath toes of wearer's foot, the connection tube (13) having a neck portion (132) which defines a narrowed path in the connection tube (13), the neck portion (132) located between the pumping device (12) and the outlets (133).
2. The shoe sole as claimed in claim 1, wherein the chamber (11) is composed of sub-chambers (111) which are in communication with each other.
3. The shoe sole as claimed in claim 1, wherein the pumping device (12) is enclosed by the chamber (11).
4. The shoe sole as claimed in claim 1, wherein the inlet tube (121) is located close to a heel portion of the shoe sole (1).
5. The shoe sole as claimed in claim 1, wherein the outlets (134) are normal-close slits.
Description
FIELD OF THE INVENTION

The present invention relates to an inflatable shoe sole that allows air to inflate the sole so as to provide cushion and comfort to the wearers.

BACKGROUND OF THE INVENTION

In order to provide a wearer a comfortable wearing experience, a cushion pad or sole is used in shoes and the sole can be compressed by the load of the wearer so as to absorb shocks during walking or jogging. Most of the shoe soles are made of foam material which has less flexibility and cannot bounce quickly so that during jogging, the foam material is kept in a flat status which cannot absorb shocks as expected. Besides, most of the shoes do not have satisfied ventilation feature so that sweater is kept in the shoes and makes the wearers feel not comfortable.

The present invention intends to provide a shoe sole that includes a chamber and a pumping device for introducing air into the chamber so that the sole is soft and responses quickly to changing loads to the sole.

SUMMARY OF THE INVENTION

The present invention relates to an inflatable shoe sole which comprises a chamber, a pumping device and a connection tube which is in communication with the chamber and the pumping device. An inlet tube extends from the pumping device so as to introduce air from outside into the pumping device. An outlet tube extends from the pumping device and is located in the chamber so as to introduce air from the pumping device into the chamber. A first valve is received in the connection tube so as to prevent air from flowing back into the pumping device. The connection tube has a neck portion which defines a narrowed path in the connection tube. A plurality of outlets are defined in a distal end of the connection tube and the neck portion is located between the pumping device and the outlets.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the inflatable shoe sole of the present invention;

FIG. 1-1 shows a cross section al view of one of the sub-chambers of the inflatable shoe sole of the present invention;

FIG. 1-2 is a perspective view of one of the sub-chambers of the inflatable shoe sole of the present invention;

FIG. 2 is a top view of the inflatable shoe sole of the present invention;

FIG. 3 shows that the inflatable shoe sole of the present invention is located in a shoe;

FIG. 4 shows that the inflatable shoe sole of the present invention is inflated in the shoe;

FIG. 5 is a top view of another embodiment of the inflatable shoe sole of the present invention;

FIG. 6 shows that the outlets are in forms of slits;

FIG. 7 shows air is introduced into the chamber

FIG. 8 shows that the slits are opened;

FIG. 9 shows that the pumping device is enclosed by the chamber;

FIG. 10 shows that air enters into the pumping device and then is pumped into the chamber, and

FIG. 11 shows yet another embodiment for heel portion.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 3, the inflatable shoe sole 1 of the present invention comprises a chamber 11 which includes a plurality of sub-chambers 111 which are in communication with each other as shown in FIGS. 1-1 and 1-2. A pumping device 12 is located at the heel portion of the sole 1 and a connection tube 13 which is in communication with the chamber 11 and the pumping device 12. A first valve 131 is received in the connection tube 13 so as to prevent air from flowing back into the pumping device 12. The connection tube 13 is located longitudinally in the shoe sole 1 and an end tube 130 is connected transversely to the distal end of the connection tube 13. A plurality of outlets 133 are defined in the end tube 130 and located corresponding to toes of wearers. A neck portion 132 which defines a narrowed path in the connection tube 13 and is located between the pumping device 12 and the outlets 133.

An inlet tube 121 extends from the pumping device 12 and is located close to a heel portion of the shoe sole 1 so as to introduce air from outside into the pumping device 12. An outlet tube 112 extends from the pumping device 12 and is located in the chamber 11 so as to introduce air from the pumping device 12 into the chamber 11.

When walking or jogging, as shown in FIG. 4, the load of the wearer compresses the pumping device 12 to reduce the pressure in the pumping device 12, and when the heel of the wearer leaves from the pumping device 12, the outside air is sucked into the pumping device 12 via the inlet tube 121. A second valve 122 is located in the inlet tube 121 to restrict the air from flowing out. The air in the pumping device 12 is then pumped out from the outlet tube 112 and enters into the chamber 11. A third valve 113 is located in the outlet tube 112 to prevent the air from flowing back into the pumping device 12. Air in the pumping device 12 is also pumped into the connection tube 13 and will be stopped by the neck portion 132. When the pressure of the air in the connection tube 13 reaches a certain value, the air enters into the end tube 130 via the neck portion 132 and goes out from the outlets 133 to cool the toes of the wearer.

As shown in FIGS. 5-8, the outlets 134 can be made as normal-close slits which is closed normally and can be opened under certain pressure. In this embodiment, the neck portion as disclosed in FIG. 1 is not necessary.

FIG. 9 shows that the pumping device 12 can b enclosed by the chamber 11 so that the heel is supported by the inflated chamber 11 and provide extra cushion feature.

FIG. 11 shows yet another embodiment that focuses on the heel portion and includes a pumping device 12 with an outlet tube 112 to introduce air into the chamber 11 around the pumping device 12. A tube 14 extends from the pumping device 12 and includes a neck portion 141. A suction tube 15 extends from the pumping device 12 and sucks air in the shoe and the air is releases from the outlet tube 14. The neck portion 141 in the tube 14 allows the pumping device 12 to pump air into the chamber 11 under certain pressure. The air to be released from the tube 14 is released when the pressure is higher than that in the pumping device 12.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US5295313 *Dec 18, 1992Mar 22, 1994Lee Kuyn CSelf-ventilating shoe having an air-controlling device
US5477626 *Jun 30, 1994Dec 26, 1995Kwon; Joong T.Multifunctional shoe
US5975861 *Jul 9, 1997Nov 2, 1999Shin; BongseopPumping assembly for use in ventilated footwear
US6085444 *Nov 20, 1998Jul 11, 2000Cho; Nam SukVentilated footwear
US20030188451 *Apr 4, 2002Oct 9, 2003Chien-I WuVentilation shoe
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US20040020076 *Aug 5, 2002Feb 5, 2004Kun-Chung LiuShoe with ozonizer
US20040221481 *May 7, 2003Nov 11, 2004Regen Paul LewisSystems and methods for ventilation of footwear
US20050005473 *Jul 7, 2003Jan 13, 2005Oh Phillip J.Self-cushion airflow shoes
US20050183286 *Jan 21, 2005Aug 25, 2005Ll International Footwear, Inc.Footwear shock absorbing and ventilating apparatus
US20060143943 *Nov 2, 2005Jul 6, 2006Cho Jong SFootwear with ventilating and shock-absorbing device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7437836 *Jul 2, 2007Oct 21, 2008Aison Co., Ltd.Insole assembly for increasing weight of footwear and heavy footwear having weight-increasing midsole/outsole
US7493706 *Apr 27, 2006Feb 24, 2009Jong Soo ChoShoe with cushion and ventilation device
US7681329 *May 30, 2007Mar 23, 2010Fu VictorVentilated footwear
US8919011 *Mar 6, 2012Dec 30, 2014C. & J. Clark International LimitedFootwear with air circulation system
US20120216432 *Mar 6, 2012Aug 30, 2012Richard ByrneFootwear with Air Circulation System
WO2011067768A1Dec 2, 2010Jun 9, 2011C-Boot Ltd.Pneumatic alternating pressure relief of a foot
Classifications
U.S. Classification36/3.00R, 36/3.00B
International ClassificationA43B7/06
Cooperative ClassificationA43B17/08, A43B13/203, A43B13/206, A43B7/081
European ClassificationA43B7/08B, A43B13/20P, A43B13/20T, A43B17/08
Legal Events
DateCodeEventDescription
Jul 18, 2011FPAYFee payment
Year of fee payment: 4
Jun 12, 2008ASAssignment
Owner name: HISN HO HSIN ENTERPISE CO., LTD., TAIWAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LO, CHIH-FANG;REEL/FRAME:021096/0817
Effective date: 20080602